机械专业外文文献翻译外文翻译末端执行器技术.doc

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1、附录外文文献及翻译作 者Arvidsson译 名阿维德森国 籍瑞典原文出处FOREIGN PATENT DOCUMENTS (国外专利文献)The technology of end effector.The end effector is a type of mechantronics equipment which synthesizes the last research achievement of engine and precision engine, micro-electronics and computer, automation control and drive, sen

2、sor and message dispose and artificial intelligence and so on. With the development of economic and the demand for automation control, robot technology is developed quickly and all types of the robots products are come into being. The practicality use of robot products not only solves the problems w

3、hich are difficult to operate for human being, but also advances the industrial automation program. At present, the research and development of robot involves several kinds of technology and the robot system configuration is so complex that the cost at large is high which to a certain extent limit t

4、he robot abroad use. To development economic practicality and high reliability robot system will be value to robot social application and economy development.With the rapid progress with the control economy and expanding of the modern cities, the let of sewage is increasing quickly: With the develop

5、ment of modern technology and the enhancement of consciousness about environment reserve, more and more people realized the importance and urgent of sewage disposal. Active bacteria method is an effective technique for sewage disposal，The lacunaris plastic is an effective basement for active bacteri

6、a adhesion for sewage disposal. The abundance requirement for lacunaris plastic makes it is a consequent for the plastic producing with automation and high productivity. Therefore, it is very necessary to design a manipulator that can automatically fulfill the plastic holding.With the analysis of th

7、e problems in the design of the plastic holding manipulator and synthesizing the robot research and development condition in recent years, a economic scheme is concluded on the basis of the analysis of mechanical configuration, transform system, drive device and control system and guided by the idea

8、 of the characteristic and complex of mechanical configuration, electronic, software and hardware. In this article, the mechanical configuration combines the character of direction coordinate and the arthrosis coordinate which can improve the stability and operation flexibility of the system. The ma

9、in function of the transmission mechanism is to transmit power to implement department and complete the necessary movement. In this transmission structure, the screw transmission mechanism transmits the rotary motion into linear motion. Worm gear can give vary transmission ratio. Both of the transmi

10、ssion mechanisms have a characteristic of compact structure. The design of drive system often is limited by the environment condition and the factor of cost and technical lever. The step motor can receive digital signal directly and has the ability to response outer environment immediately and has n

11、o accumulation error, which often is used in driving system. In this driving system, open-loop control system is composed of stepping motor, which can satisfy the demand not only for control precision but also for the target of economic and practicality. On this basis，the analysis of stepping motor

12、in power calculating and style selecting is also given. The analysis of kinematics and dynamics for object holding manipulator is given in completing the design of mechanical structure and drive system. Kinematics analysis is the basis of path programming and track control. The positive and reverse

13、analysis of manipulator gives the relationship between manipulator space and drive space in position and speed. The relationship between manipulators tip position and arthrosis angles is concluded by coordinate transform method. The geometry method is used in solving inverse kinematics problem and t

14、he result will provide theory evidence for control system. The f0unction of dynamics is to get the relationship between the movement and force and the target is to satisfy the demand of real time control. in this chamfer, Newton-Euripides method is used in analysis dynamic problem of七he cleaning rob

15、ot and the arthrosis force and torque are given which provide the foundation for step motor selecting and structure dynamic optimal ting.Control system is the key and core part of the object holding manipulator system design which will direct effect the reliability and practicality of the robot syst

16、em in the division of configuration and control function and also will effect or limit the development cost and cycle. With the demand of the PCL-839 card, the PC computer which has a. tight structure and is easy to be extended is used as the principal computer cell and takes the function of system

17、initialization, data operation and dispose, step motor drive and error diagnose and so on. A t the same time, the configuration structure features, task principles and the position function with high precision of the control card PCL-839 are analyzed. Hardware is the matter foundation of the control

18、 System and the software is the spirit of the control system. The target of the software is to combine all the parts in optimizing style and to improve the efficiency and reliability of the control system. The software design of the object holding manipulator control system is divided into several

19、blocks such as system initialization block, data process block and error station detect and dispose model and so on. PCL-839 card can solve the communication between the main computer and the control cells and take the measure of reducing the influence of the outer signal to the control system.The s

20、tart and stop frequency of the step motor is far lower than the maximum running frequency. In order to improve the efficiency of the step motor, the increase and decrease of the speed is must considered when the step motor running in high speed and start or stop with great acceleration. The increase

21、 and decrease of the motors speed can be controlled by the pulse frequency sent to the step motor drive with a rational method. This can be implemented either by hardware or by software. A step motor shift control method is proposed, which is simple to calculate, easy to realize and the theory means

22、 is straightforward. The motor s acceleration can fit the torque-frequency curve properly with this method. And the amount of calculation load is less than the linear acceleration shift control method and the method which is based on the exponential rule to change speed. The method is tested by expe

23、riment. In 1997, The Japan career development (NASDA) emission technology experiment Satellite ETS - VII (The e Test Satellite), is The earliest demonstration of on-orbit capture technology independent verification space robot system, as shown in figure 4.In the ETS - VII tracking on a XiaoLiang a s

24、tar of mechanical arm. A set of NASDA is developed, the length of the 2m for six degrees of freedom ERA of mechanical Arm Robot Arm (ETS) - VII, it contains single-degree-of-freedom, at the end of the actuator is used to capture the standard interface unit can be replaced, three end actuator is 120

25、in the support platform on the periphery, Another set of TongChanSheng is developed and Advanced Robotic manipulators ARH (Hand), on ARH by 5 dof of mechanical arm and with three (thumb and forefinger and middle finger,) of multisensor end actuators, three dexterous Hand fingers through sports organ

26、ization of each joint, because only one pair of rotation of dexterous fingers with better sex, therefore, more dexterous Hand refers to the movement of rotation; deputy adopt Many means of dexterous hand in hand can increase the constraint, the grab objects and operation of the adaptability are quit

27、e good, while considering the driving components are adopted, the layout of the palm, dexterous hand structure of concrete structure depends on the palm of the motor and transmission of the form. Most current dexterous hand using electric drive, hydraulic pressure drive and the way that only a few d

28、exterous hand by the shape memory alloy (SMA) drive, piezoelectric driven and scalability polymer drive new drive technology. Due to the electric drive mode has convenient control, low cost, mature technology, the advantages of design as the dc servo motor driving components. Transmission system is

29、more dexterous hand refers to the structure design. Follow the cord transmission way to drive principle and people realize the movement and force of long-distance transmission, can satisfy the requirements fingers. This design USES a rope and pulley, the transmission way of each finger joints long-d

30、istance driving three and six soft cable.Three multisensor end-effector containing five kinds of sensors, including a camera, three close sensor, a soft sensor, a soft sensor and a force/torque sensor, has high reliability and independent ability. Hand can finish fuel, replace batteries, tighten the

31、 screws floating objects, and loosen etc. Precise grab and operational tasks.ETS - VII on-orbit demonstration of two important during the experiment, the two floating object through the test capture manipulator end actuators to capture. In order to complete the object of different operation, ETS - V

32、II end actuator designed three GPF (GRAPPLE with torque FIXTURE) interface: the standard interface GPF - S interface, for most of the load, including ORU volitional: electric interface of GPF - M (GPF MITI), mainly for the mechanical arm interface with three means of complete connection, dexterous h

33、and operation: used for NAL truss structure of the operation of GPF - N (GPF NAL) interface.ARH hand is one half of Semidexterous dexterity (hand) claws, three degrees, by mixing fingers and flexible refers to the surface. By mixing finger includes a dc motor drives the translation of two fingers an

34、d stepping motor driven by the rotation of the fingers, basic target function. Grab Flexible refers to a reconfigurable form by the hand, in the similar structure surface to install a finger tight needle spring pressure groups, the needle content objects arrays with surface rolling array, strong abi

35、lity to adapt to the object shape of objects, and the constraint is closed, prevent from sliding into space objects.A t last, the research content and the achievement are sum up and the problems and shortages in main the content are also listed. The development and application of robot in the future

36、 is expected.末端执行器技术末端执行器是典型的机电一体化装置，它综合运用了机械与精密机械、微电子与计算机、自动控制与驱动、传感器与信息处理以及人工智能等多学科的最新研究成果，随着经济的发展和各行各业对自动化程度要求的提高，机器人技术得到了迅速发展，出现了各种各样的机器人产品。机器人产品的实用化，既解决了许多单靠人力难以解决的实际问题，又促进了工业自动化的进程。目前，由于机器人的研制和开发涉及多方面的技术，系统结构复杂，开发和研制的成本普遍较高，在某种程度上限制了该项技术的广泛应用，因此，研制经济型、实用化、高可靠性机器人系统具有广泛的社会现实意义和经济价值。 由于我国经济建设和城市

37、化的快速发展，城市污水排放量增长很快，污水处理己经摆在了人们的议事日程上来。随着科学技术的发展和人类知识水平的提高，人们越来越认识到污水处理的重要性和迫切性，科学家和研究人员发现塑料制品在水中是用于污水处理的很有效的污泥菌群的附着体。塑料制品的大量需求，使得塑料制品生产的自动化和高效率要求成为经济发展的必然。综述近几年机器人技术研究和发展的状况，在充分发挥机、电、软、硬件各自特点和优势互补的基础上，对物料抓取机械手整体机械结构、传动系统、驱动装置和控制系统进行了分析和设计，提出了一套经济型设计方案。采用直角坐标和关节坐标相结合的框架式机械结构形式，这种方式能够提高系统的稳定性和操作灵活性。传动

38、装置的作用是将驱动元件的动力传递给机器人机械手相应的执行机构，以实现各种必要的运动，传动方式上采用结构紧凑、传动比大的蜗轮蜗杆传动和将旋转运动转换为直线运动的螺旋传动。机械手驱动系统的设计往往受到作业环境条件的限制，同时也要考虑价格因素的影响以及能够达到的技术水平。由于步进电机能够直接接收数字量，响应速度快而且工作可靠并无累积误差，常用作数字控制系统驱动机构的动力元件，因此，在驱动装置中采用由步进电机构成的开环控制方式，这种方式既能满足控制精度的要求，又能达到经济性、实用化目的，在此基础上，对步进电机的功率计一算及选型问题经行了分析。在完成机械结构和驱动系统设计的基础上，对物料抓取机械手运动学

39、和动力学进行了分析。运动学分析是路径规划和轨迹控制的基础，对操作臂进行了运动学正、逆问题的分析可以完成操作空间位置和速度向驱动空间的映射，采用齐次坐标变换法得到了操作臂末端位置和姿态随关节夹角之间的变换关系，采用几何法分析了操作臂的逆向运动学方程求解问题，对控制系统设计提供了理论依据。机器人动力学是研究物体的运动和作用力之间的关系的科学，研究的目的是为了满足是实时性控制的需要，本文采用牛顿-欧拉方法对物料抓取机械手动力学进行了分析，计算出了关节力和关节力矩，为步进电机的选型和动力学分析与结构优化提供理论依据。 控制部分是整个物料抓取机械手系统设计关键和核心，它在结构和功能上的划分和实现直接关系

40、到机器人系统的可靠性、实用性，也影响和制约机械手系统的研制成本和开发周期。在控制主机的选用上，采用结构紧凑、扩展功能强和可靠性高的PC工业控制计算机作为主机，配以PCL-839卡主要承担系统功能初始化、数据运算与处理、步进电机驱动以及故障诊断等功能;同时对PCL-839卡的结构特点、功能原理和其高定位功能等给与了分析。硬件是整个控制系统以及极限位置功能赖以存在的物质基础，软件则是计算机控制系统的神经中枢，软件设计的目的是以最优的方式将各部分功能有机的结合起来，使系统具有较高的运行效率和较强的可靠性。在物料抓取机械手软件的设计上，采用的是模块化结构，分为系统初始化模块、数据处理模块和故障状态检测

41、与处理等几部分。主控计算机和各控制单元之间全部由PCL-839卡联系，并且由该卡实现抗干扰等问题，减少外部信号对系统的影响。步进电机的启停频率远远小于其最高运行频率，为了提高工作效率，需要步进电机高速运行并快速启停时，必须考虑它的升，降速控制问题。电机的升降速控制可以归结为以某种合理的力一式控制发送到步进电机驱动器的脉冲频率，这可由硬件实现，也可由软件方法来实现。本文提出了一种算法简单、易于实现、理论意义明确的步进电机变速控制策略:定时器常量修改变速控制方案。该方法能使步进电机加速度与其力矩频率曲线较好地拟合，从而提高变速效率。而且它的计算量比线性加速度变速和基于指数规律加速度的变速控制小得多

42、通过实验证明了该方法的有效性。1997年，日本宇宙事业开发团（NASDA）发射的技术试验卫星ETS-VII，是最早演示验证自主在轨捕获技术的空间机器人系统， 在ETS-VII的跟踪星上搭载一大一小两套机械臂。一套是NASDA研制的长度为2m，具有6个自由度的机械臂ERA（ETS-VII Robot Arm），它装有单自由度的末端执行器，用于操作具有标准捕获接口的可更换单元等设备，三个末端执行器呈120角设置在支撑平台的周边上；另一套是通产省研制的先进机械手ARH，ARH由5自由度的机械臂和带有三指：拇指、食指、中指的多传感器末端执行器组成，三指灵巧手的手指机构各关节通过运动副彼此相连，由于只

43、含转动副的手指灵巧性比较好，因此，多指灵巧手的运动副全部采用转动副；多指灵巧手的手掌可以增加对物体的约束，其抓取和操作的适应性都比较好，同时考虑到驱动元件的布置，采取了有手掌的灵巧手结构，而手掌的具体结构取决于电机的布置及传动装置的形式。目前大多数灵巧手采用了电驱动、气压驱动和液压驱动的方式，只有少数的灵巧手采用了SMA驱动、压电陶瓷驱动和可伸缩性聚合体驱动等新型驱动技术。由于电驱动方式具有控制方便，成本低，技术成熟等优点，本设计选用了直流伺服电机作为驱动部件。传动系统是多指灵巧手结构设计的难点。绳索传动方式仿效人手的驱动原理并且能够实现远距离的运动和力的传递，可以满足手指的结构要求。本设计采用了绳索加滑轮的传动方式，每个手指3 个关节的远距离驱动，都采用6 根软索实现。三指多传感器末端执行器上装有五种传感器，包括一台摄像机、三个接近觉传感器、一对夹持力传感器、一个柔顺传感器和一个力/力矩传感器，具备高度的可靠性和自主能力。手爪能够完成燃料加注、更换电池、浮游物体、螺钉的拧紧和松开等精密抓取和操作任务。最后，对论文主要研究内容和取得的技术成果进行了总结，提出了存在的问题和不足，同时对机器人技术的发展和应用进行了展望。